Road planer



Sept. 3, 1940.

H. E. BOERMA ROAD PLANER Filed Nov. 21, 1938 ZSheets-Sheet J.

INVENTOR HENRY E.BOERMA BY A TTORNEYS P 1940. H. E. BOERMA 2,213,300

ROAD PLANER v Filed Nov.. 21, 1938 2 Sheets-Sheet 2 INVENTOR HENRY,E-BOERMA BY A TTORNEYS Patented Sept. 3, 1940 UNITED STATES PATENTOFFICE ROAD PLAN ER Application November 21, 1938, Serial N 0. 241,687

6 Claims.

The invention relates to road scraping or planing machines of that typein which the scraper blade is detachably secured to the frame of thetruck or other motor vehicle to extend transversely beneath the same andto be vertically and horizontally adjustable in relation thereto. It isthe object of the invention to simplify and improve the construction ofthe attached mechanism, and to this end the invention consists invarious features of construction including:

First, the means for connecting the mechanism to the vehicle framefacilitating the vertical adjustment of the same;

Second, the construction of segments around which the scraper supportingbeam is angularly adjusted;

Third, the means for locking the beam to said segments in differentpositions of angular adjustment;

Fourth, various other specific features as hereinafter set forth.

In the drawings:

Figure 1 is a plan View of a portion of the truck frame showing myimproved scraper mechanism attached thereto;

Figure 2 is an enlarged plan view of a portion of the arcuate segmentaround which the scraper carrying beam is angularly adjustable, togetherwith a locking mechanism for the beam on said segment;

Figure -3 is an enlarged vertical section showving the beam segment andlocking mechanism and also the vertically adjustable supporting hangertherefor;

Figure 4 is an enlarged side elevation showing the means for verticallyadjusting the beam with respect to the vehicle frame;

Figures 5 and 6 are cross sections respectively on lines 5-5 and 6-6 ofFigure 4.

In general construction, my improved road scraper comprises a scrapercarrying beam, arcuate segments for carrying said beam and about whichit is angularly adjustable, hangers for supporting said segments fromthe frame of the motor vehicle in vertically adjustable relationthereto, a scraper blade hinged to said beam and fluid operatedmechanism for swinging the scraper on said beam and for yieldablypressing the same against the road. The beam A is preferably formed ofan inverted channel bar, the upper surface of which is in contact withthe arcuate segments B. These segments have attached thereto the hangersC provided with corrugated vertically extending shanks C adjacent to theside sills D of the truck or motor vehicle frame. The shanks ,C aresecured to the sills by bearings E preferably clipped thereto by thehook bolts E. One member of each bearing E has a groove portion forreceiving the shank C which is held in engagement therewith by aclamping cap E This cap is provided with corrugations interfitting withthe corrugations of the shank C so as to firmly hold the latter in eachposition of vertical adjustment.

ing E through the medium of lugs E and a pivot pin E while the oppositeside is clamped to the bearing by a swing bolt E and nut E engaging aslotted bearing on said cap. This arrangement permits of quicklyreleasing the cap when the shanks C are to be vertically adjusted andquickly reclamping the cap after such adjustment. I have also providedmeans for facilitating vertical adjustment of the hangers together withthe load supported thereby. This is accomplished through the medium of ascrew threaded hanger member E located midway between the hangers C andhaving it lower end connected to the segment B. A second hanger memermember E is attached to a bar E which is connected to and extendsbetween the bearings E. With this construction when the caps aredisengaged from the hanger shanks C, the segment C and its load willstill be supported by the hanger members E and E raise or lower thesegment after which the caps E are again clamped to hold the parts inthis position. The hangers C have base flanges C The operator may thenrotate the turnbuckle E so as to either The caps E are l also preferablyhinged at one side to the bearwhich bear upon the upper face of thesegment B and are connected thereto by bolts C preferably engagingslotted bearings in said base flanges. This construction permits of aslight adjustment of the hangers upon the segments whichfacilitatestheir attachment to the truck frame.

The beam A is connectedto the segments B by members F and hookedclamping bolts F. The latter embrace the opposite side flanges of thebeam with the hooks engaging the lower edges of said flanges. Themembers F are of arcuate form having at their outer edges dependingarcuate flanges F for bearing against the beam, while their innerportions F overlap the segments B and are clamped thereto by the bolts Fand nuts F The beam is usually adjusted to extend at an oblique angle tothe direction of travel of the truck, and it is essential that duringoperation it should be held rigidly in place. This I accomplish byforming the outer edge of the segments B with a series of notches B andproviding the member F with a locking dog G for engagement with one ofsaid notches. The dog G- is pivotally attached to ears G extendingupward from the member F, and is also provided with a depending portionG extending through a slot in the member F into engagement with thenotch B. A handle G serves to swing the dog out of engagement with thenotch when it is desired to angularly adjust the beam in relation to thesegment. The construction just described permits of adjusting the beamto extend at any desired angle with respect to the truck frame and torigidly clamp it in each position of adjustment. This adjustment isfurther facilitated by providing the segments B with links H pivotallyconnected to ears H at one end of each segment and of a length to extendto the center of the beam between segments. A pin or stud bolt Hpivotally connects the links to the web of the beam, thereby compellingthe beam to always remain centered in relation to the segments duringany angular adjustment thereabout. The members F are positioned upon thebeam by forming apertures in the web thereof, which are engaged bydepending pintles F The scraper which is mounted upon the beam may be ofany suitable construction and attached to the beam and operated in anysuitable manner. As such construction forms no part of the presentinvention, it is unnecessary to further describe the same, the generalarrangement being similar to that shown in the patents to Price No.1,840,820 issue-d January 12, 1932, and No. 1,865,- 587 issued July 5,1932.

What I claim as my invention is:

1. In a road planer, the combination with a truck frame and a beam forsupporting the scraper mechanism, of an arcuate segment beneath saidframe about which said beam is angularly adjusted, a verticallyadjustable hanger depending from said frame and supporting said segment,said hanger having a corrugated shank, a bearing on said frame forengaging said shank, and a cap for said shank in said bearing hinged tothe latter and provided with corrugations interfitting the corrugationsof the shank to hold the same from vertical displacement and means forclamping said cap to said bearing.

2. In a road planer, the combination with a truck frame and a beam forcarrying the scraper mechanism, of a segment beneath said frame aboutwhich said beam is angularly adjusted, a hanger for supporting saidsegment, means for clamping said hanger in various positions of verticaladjustment, and a second hanger for supporting and vertically adjustingsaid segment and its load when said clamping means is released, saidsecond hanger being formed in two sections with an intermediateturnbuckle in threaded engagement therewith.

3. In a road planer, the combination with a truck frame and a beam forcarrying the scraper mechanism, of a segment beneath said frame aboutwhich said beam is angularly adjusted, a pair of hangers depending fromsaid truck frame and supporting said segment, means for clamping saidhangers in different positions of vertical adjustment, and a thirdhanger intermediate said pair of hangers for supporting and verticallyadjusting said segment and its load when said clamping means isreleased, said third hanger comprising aligned threaded members and anintermediate turnbuckle.

4. In a road planer, the combination with a truck frame and a beam forcarrying the scraper mechanism, of a segment beneath said frame aboutwhich said beam is angularly adjusted, a pair of hangers depending fromsaid truck frame and supporting said segment, each hanger hav-- ing acorrugated vertically extending shank, clamping bearings for said shankson said truck frame having an interfitting engagement therewith, and athird hanger intermediate said pair of hangers for supporting andvertically adjusting said segment and its load when said clampingbearings are released, said third hanger comprising a supporting barextending between and secured to said clamping bearings, a pair ofaligned threaded members respectively connected with said segment andsupporting bar, and a turnbuckle connecting said aligned members.

5. In a road planer, the combination with a truck frame and a beam forcarrying the scraper mechanism, of a segment beneath said frame aboutwhich said beam is angularly adjusted, a hanger depending from saidtruck frame and supporting said segment, said hanger having a corrugatedvertically extending shank, and a clamping bearing for said shank havinga member secured to said frame, a cap hinged to said mem-, her andprovided with corrugations interfitting with the corrugations of saidshank, and a swing bolt pivotally attached to said member and engageablewith said cap to clamp the latter against said shank.

6. In a road planer, the combination with a truck frame and a beam forcarrying the scraper mechanism, of a segment beneath said frame aboutwhich said beam is angularly adjusted, a pair of hangers depending fromsaid truck frame and supporting said segment, means for clamping saidhangers in different positions of vertical adjustment, and a thirdhanger intermediate said pair of hangers for supporting and verticallyadjusting said segment and its load when said clamping means isreleased.

HENRY E. BOERMA.

